H3/H3T Hummer Stainless Steel Rear Differential Cover

Protect your rear gears!

Made of 304 Stainless Steel, Water Jet Cut from CAD, we start with a 3/8" thick ring, three 1/4" thick gear cover shields custom press formed, a hand lathed deep set SS drain plug bung, and TIG welded together inside and out with heavy SS rod. The completed cover's gasket surface is then        machined absolutely flat for trouble-free installation and reliability.  The outside of our covers are then media blasted for a uniform finish that is not only weatherproof, but ready for paint as well.

With the Roc Doc Diff Cover, you don't need a guard or a skid, these are built for the punishment of rock crawling, will last longer than your truck, and have a unique serious performance look. We are THE source for this indestructible H3/H3T rear differential cover.

                            Click picture to enlarge

Outside SM Inside SM   Parts Included:
  • Roc Doc Rear Diff Cover
  • 10 SS Socket Head mounting bolts
  • 10 SS Lock Washers
  • Mild Steel 3/4" 14 NPT Fill Plug
  • Fel-Pro Gasket #RSD550281
     Outside                  Inside

PRICE: $334.99 Plus shipping
*Contact us for shipping quotes outside the 48 US States

  Minimum Tools Needed:
  • 3/8" Drive Socket Wrench
  • Short 3/8" Drive Extension
  • Gasket Scraper
  • 13MM Socket or Wrench
  • 6MM Hex Wrench or Hex Bit Socket
  • 14MM Hex Wrench or Hex Bit Socket
  • Torque Wrench
  • Oil Drain Pan

This cover fits additional GM 10 Bolt 8.5" Rear Differentials, contact us for more applications.


Diff Cover Wide

Rocks view

       Roc Doc Rear Diff Cover Installation Instructions.pdf



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